<template>
  <div>
    <header>
      <mt-header fixed title="李伟Vue Demo">
        <div @click="GoBack" slot="left" v-show="flag">
          <mt-button icon="back">返回</mt-button>
        </div>
      </mt-header>
    </header>
    <div class="content">
      <transition>
        <router-view>></router-view>
      </transition>
    </div>
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item1" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item1" to="/vip">
        <span class="mui-icon mui-icon-contact"></span>
        <span class="mui-tab-label">会员</span>
      </router-link>
      <router-link class="mui-tab-item1" to="/shopcar">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
          <span class="mui-badge" id="Carbadge">{{this.$store.getters.getAll}}</span>
        </span>
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item1" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
    </nav>
  </div>
</template>

<script>
export default {
  data() {
    return {
      flag: false
    };
  },
  created() {
    this.flag = this.$route.path === "/home" ? false : true;
  },
  methods: {
    GoBack() {
      this.$router.go(-1);
    }
  },
  watch: {
    "$route.path": function(newVal) {
      if (newVal === "/home") {
        this.flag = false;
      } else {
        this.flag = true;
      }
    }
  }
};
</script>
<style scoped>
.content {
  padding-top: 40px;
  overflow-x: hidden;
  padding-bottom: 50px;
}

.v-enter {
  opacity: 0;
  transform: translateX(-100%);
}
.v-leave-to {
  opacity: 0;
  transform: translateX(-100%);
  position: absolute;
}
.v-enter-active,
.v-leave-active {
  transition: all 0.5s ease;
}
</style>